<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮 -->
      <el-row>
        <el-col>
          <el-button type="primary"
                     @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 角色列表 -->
      <el-table :data='rolesList'>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['dbbottom',i1 === 0?'dbtop':'','vcenter']"
                    v-for="(item1,i1) in scope.row.children"
                    :key="item1.id">
              <!-- 一级权限  -->
              <el-col :span="5">
                <el-tag closable
                        @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二级和三级权限 -->
              <el-col :span="19">

                <el-row :class="[i2===0?'':'dbtop','vcenter']"
                        v-for="(item2,i2) in item1.children"
                        :key="item2.id">
                  <!-- 二级 -->
                  <el-col :span="6">
                    <el-tag type="success"
                            closable
                            @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <!-- 三级 -->
                  <el-col :span="18">
                    <el-tag type="warning"
                            v-for="(item3) in item2.children"
                            :key="item3.id"
                            closable
                            @close="removeRightById(scope.row,item3.id)">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"
                         label="#"></el-table-column>
        <el-table-column label="角色名称"
                         prop="roleName"></el-table-column>
        <el-table-column label="角色描述"
                         prop="roleDesc"></el-table-column>
        <el-table-column label="操作"
                         width="300px">
          <template slot-scope="scope">
            <el-button size="mini"
                       type="primary"
                       icon="el-icon-edit"
                       @click="showEditDialog(scope.row.id)">编辑</el-button>
            <el-button size="mini"
                       type="danger"
                       icon="el-icon-delete"
                       @click="removeRolesById(scope.row.id)">删除</el-button>
            <el-button size="mini"
                       type="warning"
                       icon="el-icon-setting"
                       @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限 -->
    <el-dialog title="分配权限"
               :visible.sync="setRightDialogVisible"
               width="50%"
               @close="setRightDialogClosed">
      <!-- 树形控件 -->
      <el-tree :data="rightslist"
               :props="treeProps"
               show-checkbox
               node-key="id"
               default-expand-all
               :default-checked-keys="defKeys"
               ref="treeRef"></el-tree>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 添加角色信息 -->
    <el-dialog title="添加角色信息"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="80px">
        <el-form-item label="角色名称"
                      prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述"
                      prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 编辑角色信息 -->
    <el-dialog title="编辑角色信息"
               :visible.sync="editDialogVisible"
               width="30%"
               @close="editDialogClosed">
      <el-form :model="editForm"
               ref="editFormRef"
               label-width="80px">
        <el-form-item label="角色名称"
                      prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述"
                      prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editRolesInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    return {
      rolesList: [],
      setRightDialogVisible: false,
      rightslist: [],
      // 树形控件绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      addDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      addFormRules: {
        roleName: [{ required: true, message: '请输入角色名称', trigger: 'blur' }],
        roleDesc: [{ required: true, message: '请输入角色描述', trigger: 'blur' }]
      },
      editDialogVisible: false,
      editForm: {},
      defKeys: [],
      roleId: ''
    }
  },
  created () {
    this.getRolesList()
  },
  methods: {
    async getRolesList () {
      const { data: res } = await this.$http.get('roles')

      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      //  console.log(this.rolesList);
    },
    async removeRightById (role, rightId) {
      const confirmResult = await this.$confirm('此操作将永久删除该文件,是否继续?', '提示', {
        confirmButtonText: '确定',
        concelmButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除！')
      }
      const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      //  console.log(res);
      if (res.meta.status !== 200) {
        return this.$message.error('删除角色权限失败')
      }
      role.children = res.data
    },
    async showSetRightDialog (role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限失败！')
      }
      this.rightslist = res.data
      this.getLeafkeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    // 添加角色信息
    addRoles () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const { data: res } = await this.$http.post('roles/', this.addForm)
        //  console.log(res);
        if (res.meta.status !== 201) {
          return this.$message.error('添加角色信息失败！')
        }
        this.$message.success('添加角色信息成功！')
        this.addDialogVisible = false
        this.getRolesList()
      })
    },
    // 删除角色信息
    async removeRolesById (id) {
      // console.log(id);
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('删除已取消')
      }
      // console.log(confirmResult);
      const { data: res } = await this.$http.delete('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除角色失败!')
      }
      this.$message.success('删除角色成功!')
      this.getRolesList()
    },
    // 监听表单关闭
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    async showEditDialog (id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('roles/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色数据失败！')
      }
      this.editForm = res.data
      //  console.log(this.editForm);
    },
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    async editRolesInfo () {
      const { data: res } = await this.$http.put('roles/' + this.editForm.roleId, {
        roleName: this.editForm.roleName,
        roleDesc: this.editForm.roleDesc
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新角色信息失败')
      }
      this.editDialogVisible = false
      this.$message.success('更新角色数据成功')
      this.getRolesList()
    },
    getLeafkeys (node, arr) {
      if (!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafkeys(item, arr)
      })
    },
    setRightDialogClosed () {
      this.defKeys = []
    },
    async allotRights () {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, { rids: idStr })
      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }
      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.dbtop {
  border-top: 1px solid #eee;
}
.dbbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
